Bed



FIG. 1 is a perspective view of a bed showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof; and,

FIG. 4 is a right-side view thereof, the left-side view being a mirror image.

The broken lines in the drawings, showing support slats, support member and holes, represent environmental subject matter and form no part of the claimed design. 

The ornamental design for a bed, as shown and described. 